No More Dead Battery! Battery gone down? having no idea? This Simple Battery Level Indicator Circuit can show battery level. Easy to make, cheap and works fast. Know when battery is full or low. Good for beginners and DIY lovers. Circuit Working: Parts List: Component Value / Type Quantity Resistors 2.2k 1/4 watt 1 680Ω […]
Battery Charger Circuits
Solar Panel Battery Inverter Connection Circuit
This project is for Solar Panel Battery Inverter Connection Circuit It shows how solar energy is converted into electricity to power AC and DC loads. The circuit uses a solar panel, solar charge controller, battery, inverter and AC loads. This circuit can light a bulb and run a fan easily. It is suitable for small […]
Simple PWM Solar Charge Controller Circuit
Want to save energy bill? Try this Simple PWM Solar Charge Controller Circuit and get power from sun. It helps to charge battery from solar panel safely. It also gives power to DC load like LED bulb or fan. Just connect solar, battery and load and then controller will do all smart work. This controller […]
DIY Solar Battery Charger Circuit
This is a small DIY Solar Battery Charger Circuit project. It charges one 3.7V lithium battery using sunlight. We can use solar cell, TP4056 charger board, one diode, one switch and one boost converter module.. This circuit make 5V power for battery and mobile charging. Graph for lithium battery charge over time: This graph show […]
Small UPS Circuit for Router Backup
Never lose connection again, make this Small UPS Circuit for Router Backup. When there is power cut then internet goes off. Router and modem stop. Small UPS solve problem. This give backup to DSL modem and WiFi router. This circuit is with simple parts, easy to build and with low cost. Circuit Working: Parts List: […]
Battery Operated Automatic Emergency Light Circuit
Automatic emergency light use battery and give light when power is gone. Lamp turns ON itself when main power fails and is good for home, office or anywhere which need extra light. It is best to use 6V lead acid battery or 5×1.2V NiCd cells. The design for Battery Operated Automatic Emergency Light Circuit is […]